EP 1057715 A3 20050105 - Electrical power steering apparatus with temperature dependent current limitation
Title (en)
Electrical power steering apparatus with temperature dependent current limitation
Title (de)
Elektrische Servolenkung mit temperaturabhängiger Strombegrenzung
Title (fr)
Direction assistée électrique avec limitation de courant dépendant de la température
Publication
Application
Priority
JP 15667599 A 19990603
Abstract (en)
[origin: EP1057715A2] An electrically operated power steering apparatus for an automotive vehicle having a steering wheel to be operated by the vehicle operator includes a motor and a power supply restricting device. The motor applies a drive force thereof to a torque transmitting system so as to assist a steering torque applied to the steering wheel by the vehicle operator. The power supply restricting device utilizes a temperature of a heated portion of the electrically operated power steering apparatus which emits heat as a result of a supply of an electric power to the motor, at a reference point of time, as an initial temperature of the heated portion, utilizes a plurality of electric power-related values each of which is related to at least one of a current and a voltage value of the motor, as a plurality of physical quantities related to temperature increases of the heated portion each of which is an increase of the temperature of the heated portion from that at the reference point of time, and restricts the electric power supply to the motor such that an actual value of the temperature of the heated portion does not exceed a predetermined upper limit thereof. <IMAGE>
IPC 1-7
IPC 8 full level
B62D 6/00 (2006.01); B62D 5/04 (2006.01); H02H 6/00 (2006.01); H02H 7/08 (2006.01); H02H 7/085 (2006.01)
CPC (source: EP US)
B62D 5/046 (2013.01 - EP US); B62D 5/0463 (2013.01 - EP US); B62D 5/0496 (2013.01 - EP US); H02H 6/005 (2013.01 - EP US); H02H 7/0833 (2013.01 - EP US); H02H 7/0858 (2013.01 - EP US)
Citation (search report)
- [XAY] US 4611682 A 19860916 - YASUDA TOMINO [JP], et al
- [A] US 4961033 A 19901002 - HIROTA FUMIAKI [JP]
- [A] EP 0249506 A2 19871216 - MITSUBISHI ELECTRIC CORP [JP]
- [A] US 4771843 A 19880920 - SHIMIZU YASUO [JP]
- [A] US 4771845 A 19880920 - SHIMIZU YASUO [JP]
- [DYA] PATENT ABSTRACTS OF JAPAN vol. 1998, no. 09 31 July 1998 (1998-07-31)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1057715 A2 20001206; EP 1057715 A3 20050105; EP 1057715 B1 20071226; DE 60037553 D1 20080207; DE 60037553 T2 20081211; JP 2000344118 A 20001212; JP 3715136 B2 20051109; US 6334503 B1 20020101
DOCDB simple family (application)
EP 00112026 A 20000602; DE 60037553 T 20000602; JP 15667599 A 19990603; US 58679200 A 20000605